I love my purchase, and it INDEED did make a difference in performance. My Neon sat in my garage for 8yrs waiting for me to put another drivetrain in it. Finally, my son and I who's now 12, ( 4 when car was originally parked ) got to put it back together. I drove it around for a year and decided, something's missing. I ordered a K&N filter while changing my oil and performing maintenance, now it moves with VIGOR Thanks K&N for an outstanding product.. Oh yeah by the way, my son doesn't know it yet, but it's gonna be his first car when he's old enough.... shhhh..